________for two days, Steve managed to finish his reports on schedule.
A. Having worked
B. Worked
C. To work
D. Being worked
查看答案
Like ancient sailors, birds can find their way______ the sun and the stars.
A. Being used
B. to use
C. used
D. using
_________in the poorest area of Glasgow, he had a long, hard road to becoming a football star.
A. Raising
B. To be raised
C. Raised
D. Being raised
There_______ nothing more to do, Mr.Goodman left for home.
A. was
B. being
C. to be
D. had been
To the Chinese people, maintaining _______ is the ultimate purpose of harmony.